申请人:Canon Kabushiki Kaisha
公开号:US05091109A1
公开(公告)日:1992-02-25
A mesomorphic compound represented by the following formula (I): ##STR1## wherein R.sub.1 and R.sub.2 respectively denote an alkyl group having 1-16 carbon atoms capable of having a substituent; X.sub.1, X.sub.2 and X.sub.3 respectively denote a single bond, --O--, ##STR2## A.sub.1 and A.sub.2 respectively ##STR3## wherein X.sub.4 and X.sub.5 respectively denote hydrogen, fluorine, chlorine, bromine, --CH.sub.3, --CN or --CF.sub.3 with proviso that X.sub.1 always denotes a single bond when A.sub.1 denotes a single bond; and n is 0 or 1.
由以下公式(I)表示的一种中胚层化合物:##STR1##其中R.sub.1和R.sub.2分别表示具有1-16个碳原子的烷基基团,能够具有取代基;X.sub.1、X.sub.2和X.sub.3分别表示单键,--O--,##STR2##A.sub.1和A.sub.2分别##STR3##其中X.sub.4和X.sub.5分别表示氢、氟、氯、溴、--CH.sub.3、--CN或--CF.sub.3,条件是当A.sub.1表示单键时,X.sub.1始终表示单键;n为0或1。